Easily the best Castleroid Flash game ever made
You mean to tell me you drew and programmed this game and composed the music as well? That's unbelievable! And this is your first Flash game? If you've made more, where are they? Whatever happened to starting small? This game is a monster, and it's expertly and beautifully made.
I was hard-pressed to find any glitches. In the first room of Mare Carelia, there are some invisible blocks in the upper right area that I don't think were supposed to be there. If you try flying through that room you'll probably hit them. Also if you become a shell in order to fall into a one block wide hole, you'll become stuck and have to load your game. Also, sometimes jumping against a wall looking for secrets and stuff, I'd land on the wall as though it were a floor. It might be the code that makes you stick to a wall just not rotating you the right way all the time, or it might be simple collision detection sensing a block underneath you and letting you stand with just your "toe" on it even though there's another block above it.
Anyway, there is no end to the good things I have to say about this game. It's a masterpiece. Well done.